In this book, the authors present current research in the study of the prediction, formation and environmental impact of precipitation. Topics discussed in this compilation include: the precipitation of anions in aqueous systems; inter-decadal trend turnings of climate modes and dynamic/thermodynamic structures associated with a series of winter precipitation events over China; stochastic modelling and simulation of daily precipitation for weather generation; anion intercalation during Mg-Al LDH precipitation; and, main water-soluble ions in precipitation of the central Mediterranean region.